Hey there mate!
Please check the attached answer of picture for explanation.

Twenty five percent probability
By looking at the graph you can rule out choices C and D because the graph given to you is an increasing linear function and C and D represent functions with a decreasing or negative slope.
By looking at the picture the slop of the graph seems to be 4/1 (rise/run) so your slope is 4. And your y-intercept looks like its -4 so your answer is B<span />
Find how many mm are in 25m (by multiplying 25 by 1000) and convert that answer to km.
Answer:
value of x is for values that are excludedor or left out